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Merge pull request #15275 from dotty-staging/backport-main-generic-co…
…mpiler [backport] add MainGenericCompiler
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package dotty.tools | ||
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import scala.language.unsafeNulls | ||
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import scala.annotation.tailrec | ||
import scala.io.Source | ||
import scala.util.Try | ||
import java.io.File | ||
import java.lang.Thread | ||
import scala.annotation.internal.sharable | ||
import dotty.tools.dotc.util.ClasspathFromClassloader | ||
import dotty.tools.runner.ObjectRunner | ||
import dotty.tools.dotc.config.Properties.envOrNone | ||
import dotty.tools.io.Jar | ||
import dotty.tools.runner.ScalaClassLoader | ||
import java.nio.file.Paths | ||
import dotty.tools.dotc.config.CommandLineParser | ||
import dotty.tools.scripting.StringDriver | ||
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enum CompileMode: | ||
case Guess | ||
case Compile | ||
case Decompile | ||
case PrintTasty | ||
case Script | ||
case Repl | ||
case Run | ||
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case class CompileSettings( | ||
verbose: Boolean = false, | ||
classPath: List[String] = List.empty, | ||
compileMode: CompileMode = CompileMode.Guess, | ||
exitCode: Int = 0, | ||
javaArgs: List[String] = List.empty, | ||
javaProps: List[(String, String)] = List.empty, | ||
scalaArgs: List[String] = List.empty, | ||
residualArgs: List[String] = List.empty, | ||
scriptArgs: List[String] = List.empty, | ||
targetScript: String = "", | ||
compiler: Boolean = false, | ||
quiet: Boolean = false, | ||
colors: Boolean = false, | ||
) { | ||
def withCompileMode(em: CompileMode): CompileSettings = this.compileMode match | ||
case CompileMode.Guess => | ||
this.copy(compileMode = em) | ||
case _ => | ||
println(s"compile_mode==[$compileMode], attempted overwrite by [$em]") | ||
this.copy(exitCode = 1) | ||
end withCompileMode | ||
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def withScalaArgs(args: String*): CompileSettings = | ||
this.copy(scalaArgs = scalaArgs.appendedAll(args.toList.filter(_.nonEmpty))) | ||
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def withJavaArgs(args: String*): CompileSettings = | ||
this.copy(javaArgs = javaArgs.appendedAll(args.toList.filter(_.nonEmpty))) | ||
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def withJavaProps(args: (String, String)*): CompileSettings = | ||
this.copy(javaProps = javaProps.appendedAll(args.toList)) | ||
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def withResidualArgs(args: String*): CompileSettings = | ||
this.copy(residualArgs = residualArgs.appendedAll(args.toList.filter(_.nonEmpty))) | ||
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def withScriptArgs(args: String*): CompileSettings = | ||
this.copy(scriptArgs = scriptArgs.appendedAll(args.toList.filter(_.nonEmpty))) | ||
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def withTargetScript(file: String): CompileSettings = | ||
Try(Source.fromFile(file)).toOption match | ||
case Some(_) => this.copy(targetScript = file) | ||
case None => | ||
println(s"not found $file") | ||
this.copy(exitCode = 2) | ||
end withTargetScript | ||
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def withCompiler: CompileSettings = | ||
this.copy(compiler = true) | ||
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def withQuiet: CompileSettings = | ||
this.copy(quiet = true) | ||
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def withColors: CompileSettings = | ||
this.copy(colors = true) | ||
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def withNoColors: CompileSettings = | ||
this.copy(colors = false) | ||
} | ||
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object MainGenericCompiler { | ||
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val classpathSeparator = File.pathSeparator | ||
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@sharable val javaOption = raw"""-J(.*)""".r | ||
@sharable val javaPropOption = raw"""-D(.+?)=(.?)""".r | ||
@tailrec | ||
def process(args: List[String], settings: CompileSettings): CompileSettings = args match | ||
case Nil => | ||
settings | ||
case "--" :: tail => | ||
process(Nil, settings.withResidualArgs(tail.toList*)) | ||
case ("-v" | "-verbose" | "--verbose") :: tail => | ||
process(tail, settings.withScalaArgs("-verbose")) | ||
case ("-q" | "-quiet") :: tail => | ||
process(tail, settings.withQuiet) | ||
case "-repl" :: tail => | ||
process(tail, settings.withCompileMode(CompileMode.Repl)) | ||
case "-script" :: targetScript :: tail => | ||
process(Nil, settings | ||
.withCompileMode(CompileMode.Script) | ||
.withJavaProps("script.path" -> targetScript) | ||
.withTargetScript(targetScript) | ||
.withScriptArgs(tail*)) | ||
case "-compile" :: tail => | ||
process(tail, settings.withCompileMode(CompileMode.Compile)) | ||
case "-decompile" :: tail => | ||
process(tail, settings.withCompileMode(CompileMode.Decompile)) | ||
case "-print-tasty" :: tail => | ||
process(tail, settings.withCompileMode(CompileMode.PrintTasty)) | ||
case "-run" :: tail => | ||
process(tail, settings.withCompileMode(CompileMode.Run)) | ||
case "-colors" :: tail => | ||
process(tail, settings.withColors) | ||
case "-no-colors" :: tail => | ||
process(tail, settings.withNoColors) | ||
case "-with-compiler" :: tail => | ||
process(tail, settings.withCompiler) | ||
case ("-cp" | "-classpath" | "--class-path") :: cp :: tail => | ||
val (tailargs, newEntries) = MainGenericRunner.processClasspath(cp, tail) | ||
process(tailargs, settings.copy(classPath = settings.classPath ++ newEntries.filter(_.nonEmpty))) | ||
case "-Oshort" :: tail => | ||
// Nothing is to be done here. Request that the user adds the relevant flags manually. | ||
// i.e this has no effect when MainGenericRunner is invoked programatically. | ||
val addTC="-XX:+TieredCompilation" | ||
val tStopAtLvl="-XX:TieredStopAtLevel=1" | ||
println(s"ignoring deprecated -Oshort flag, please add `-J$addTC` and `-J$tStopAtLvl` flags manually") | ||
process(tail, settings) | ||
case javaOption(stripped) :: tail => | ||
process(tail, settings.withJavaArgs(stripped)) | ||
case javaPropOption(opt, value) :: tail => | ||
process(tail, settings.withJavaProps(opt -> value)) | ||
case arg :: tail => | ||
process(tail, settings.withResidualArgs(arg)) | ||
end process | ||
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def main(args: Array[String]): Unit = | ||
val settings = process(args.toList, CompileSettings()) | ||
if settings.exitCode != 0 then System.exit(settings.exitCode) | ||
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def classpathSetting = | ||
if settings.classPath.isEmpty then List() | ||
else List("-classpath", settings.classPath.mkString(classpathSeparator)) | ||
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def reconstructedArgs() = | ||
classpathSetting ++ settings.scalaArgs ++ settings.residualArgs | ||
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def addJavaProps(): Unit = | ||
settings.javaProps.foreach { (k, v) => sys.props(k) = v } | ||
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def run(settings: CompileSettings): Unit = settings.compileMode match | ||
case CompileMode.Compile => | ||
addJavaProps() | ||
val properArgs = reconstructedArgs() | ||
dotty.tools.dotc.Main.main(properArgs.toArray) | ||
case CompileMode.Decompile => | ||
addJavaProps() | ||
val properArgs = reconstructedArgs() | ||
dotty.tools.dotc.decompiler.Main.main(properArgs.toArray) | ||
case CompileMode.PrintTasty => | ||
addJavaProps() | ||
val properArgs = reconstructedArgs() | ||
dotty.tools.dotc.core.tasty.TastyPrinter.main(properArgs.toArray) | ||
case CompileMode.Script => // Naive copy from scalac bash script | ||
addJavaProps() | ||
val properArgs = | ||
reconstructedArgs() | ||
++ List("-script", settings.targetScript) | ||
++ settings.scriptArgs | ||
scripting.Main.main(properArgs.toArray) | ||
case CompileMode.Repl | CompileMode.Run => | ||
addJavaProps() | ||
val properArgs = reconstructedArgs() | ||
repl.Main.main(properArgs.toArray) | ||
case CompileMode.Guess => | ||
run(settings.withCompileMode(CompileMode.Compile)) | ||
end run | ||
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run(settings) | ||
end main | ||
} |
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